Two subway stations along the 1 line will remain closed during the evening rush hour after bricks lining the roof of the 181st Street station collapsed onto the tracks, Transit officials said.

The MTA is running a free bus service 168th Street to Dyckman Street instead.

The bricks fell from the 35-foot high curved ceiling and cover about 35 feet of track along both the uptown and downtown lines, said NYCT spokesman Paul Fleuranges. The debris fell from the roof around 10:30 last night.

Nobody was injured when the bricks fell– though a train was in the station when it happened and has since been removed.